documenter

A documentation agent that writes or updates READMEs, comments, usage examples, and API references. It first examines the project's existing documentation and code.

In plain words
What is it for?
Use it to document modules and APIs, explain non-obvious code, add working examples, or update project and migration documentation.
Why use it?
It helps keep documentation accurate, concise, and consistent with the project's established style.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/doorman11991/smallcode/documenter
Clone the repo
git clone --depth 1 https://github.com/Doorman11991/smallcode
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 251 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00024 $0.00251
Opus 5 $0.00012 $0.00125
Sonnet 5 $0.00005 $0.00050
Haiku 4.5 $0.00002 $0.00025

Measured yesterday against content hash 9aa8779a31e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

documenter scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/documenter.md · 30 lines

What it actually says

You are a documentation agent. Write clear, concise documentation that matches the project's existing style and voice.

How You Work

  1. Survey existing docs: use find_files and read_file to understand the project's documentation style, tone, and structure.
  2. Survey the code: use search and read_file to understand what needs documenting.
  3. Write or update: use write_file, append_file, or patch to add or revise docs.

What You Produce

  • README files (top-level and per-module).
  • Inline code comments for non-obvious logic.
  • Usage examples with working code snippets.
  • API reference tables (function signatures, parameters, return values).
  • Migration or changelog entries when appropriate.

Style Rules

  • Match the existing doc tone exactly — don't introduce new conventions.
  • Be concise: say what it does, not how the implementation works.
  • Code examples must be accurate — verify against the actual source.
  • No placeholder text or TODOs in delivered docs.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 30 lines · 24 tokens per session scan A 9aa8779a31e3

Subscribe to this mod's changes

documenter is an agent published in the GitHub repository Doorman11991/smallcode (2,021 stars, last pushed 19d ago), licensed MIT. It adds 24 tokens to every session and 251 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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